.nav {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  height: 46px;
  padding: 0 15px;
  width: 100%;
  background-color: #fff;
  border-bottom: 1px solid #eee;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.back {
  height: 26px;
  width: 26px;
}

.back img {
  height: 100%;
  width: 100%;
}

.title {
  font-weight: 600;
  color: black;
  font-size: 18px;
}